---
title: "Configuring Additional Servers"
slug: "configuring-additional-servers-1"
updated: 2026-08-04T08:08:17Z
published: 2026-08-04T08:08:17Z
canonical: "kb.ctera.com/configuring-additional-servers-1"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://kb.ctera.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Configuring Additional Servers

Additional servers are configured to support different services, such as messaging, thumbnails, or document preview servers. In a production environment you have as a minimum a primary database server, a secondary, replication, server and at least two application servers for HA, or three application servers when the CTERA Messaging service is enabled.

**To configure additional servers:**

1. In the global administration view, select **Main > Servers** in the navigation pane.  

The **Servers** page is displayed.  

![Image](https://cdn.document360.io/30792387-cdcb-4791-aa14-94929bbcd3fe/Images/Documentation/image-PY94OCWN.png?sv=2026-02-06&spr=https&st=2026-11-11T04%3A27%3A27Z&se=2026-11-11T05%3A27%3A27Z&sr=c&sp=r&sig=f1RqrzQEZJ6uTIqv%2F9dkuDTZyN4iRQBon6BqzNVEfgw%3D)
2. If you have already defined another server, that is still configured as an **Application server**, uncheck **Application server** for the primary database server, called *Main DB* in the **Servers** page.  

![image.png](https://cdn.document360.io/30792387-cdcb-4791-aa14-94929bbcd3fe/Images/Documentation/image-2GKQNRTI.png?sv=2026-02-06&spr=https&st=2026-11-11T04%3A27%3A27Z&se=2026-11-11T05%3A27%3A27Z&sr=c&sp=r&sig=f1RqrzQEZJ6uTIqv%2F9dkuDTZyN4iRQBon6BqzNVEfgw%3D)
**Warning**

You can only sign in to a server that is configured as an **Application server**, using the default portal DNS or that server IP. Once you have unchecked **Application server** for the primary database server and secondary, replication, server, you can no longer sign in to the CTERA Portal using either of these server IPs.
3. Check the boxes of the services to be provided by this server, for example, as a document preview server.
4. Click **Save**.

![Image](https://cdn.document360.io/30792387-cdcb-4791-aa14-94929bbcd3fe/Images/Documentation/image-EMJH2JNR.png?sv=2026-02-06&spr=https&st=2026-11-11T04%3A27%3A27Z&se=2026-11-11T05%3A27%3A27Z&sr=c&sp=r&sig=f1RqrzQEZJ6uTIqv%2F9dkuDTZyN4iRQBon6BqzNVEfgw%3D)